JLC3DP Blog

Plastics

Is MJF Suitable for Production Parts? A Practical Engineer’s Guide

Why Engineers Choose MJF for Production Parts MJF didn’t rise just as a prototyping machine. It climbed straight into real manufacturing. The making of HP Multi Jet Fusion 3D printed parts uses a fine-grained nylon powder fused with a chemical fusing agent and precision infrared heating. That means consistent, repeatable parts without visible stepping or layered fragility. Dimensional accuracy typically sits around ±0.2 mm for small features, depending on geometry, orientation, and part size, tight en......

Jan 09, 2026

Sponsorships

Robert Feranec creates a customized keyboard: working with JLCPCB and JLC3DP

Robert Feranec is a renowned hardware design expert. He founded FEDEVEL Academy, which helps engineers around the world learn circuit design and PCB manufacturing through online courses and educational videos. As a content creator on YouTube, Robert shares tutorials, tips and tricks for hardware design, building a large base of professionals and enthusiasts. In this video, Robert designs a custom keyboard for video editing. As one of the world’s leading PCB manufacturers, JLCPCB is committed to provid......

Nov 20, 2024

Software & Tools

The Importance of 3D Scanners in 3D Printing: Improving Precision and Efficiency

3D printing can quickly transform digital models into entities, while 3D scanning generates digital models by capturing the three-dimensional shape of an object. The two are closely linked to form an efficient cycle, which not only improves production efficiency, but also opens up new ideas for design and manufacturing, and promotes the realization of a variety of applications from prototyping, customization to reverse engineering. Source: https://www.sculpteo.com/en/3d-learning-hub/basics-of-3d-print......

Oct 23, 2024

Plastics

Why MJF Nylon Parts Feel Weak: Strength vs Stiffness vs Finish

If MJF nylon parts feel weaker than expected, it’s usually not because “MJF isn’t strong.” It’s because strength, stiffness, and surface finish are being lumped together as one vague idea of quality. They’re not the same thing. A part can be stiff but brittle. Strong but visually rough. Smooth but mechanically average. Understanding how these properties actually behave in Multi Jet Fusion, and how different nylon grades shift the balance, is the difference between parts that just look good and parts t......

Dec 30, 2025

Plastics

PA12 vs PA12s 3D Printing Comparison: The Truth!

PA12 and PA12S are basically the two standard nylons you’re going to run into most, particularly in Multi Jet Fusion (MJF) and Selective Laser Sintering (SLS). At first glance, they may appear interchangeable because both are engineering-grade nylon 12 powders, both deliver strong mechanical performance, and both are common choices for functional parts. In practice, however, their behavior differs in ways that matter to engineers. Comparing PA12 vs PA12S is not about asking which is “better” or “worse......

Dec 29, 2025

Plastics

MJF Tolerances & Dimensional Accuracy: What Engineers Expect

Warped edges, misaligned holes, and functional misfits are often caused by variations in MJF tolerances rather than random printing errors. If you’re printing with HP Multi Jet Fusion and running into tolerance or dimensional issues, it’s rarely “bad luck.” It’s almost always something happening inside the MJF process itself. MJF is known for repeatability, but tolerances don’t “take care of themselves.” Shrinkage, thermal gradients, part orientation, and feature design quietly stack the odds for—or a......

Dec 28, 2025